@dover , you are making excuses for a defective design. I will say this much less politely than atmasphere, who is a gentleman and a scholar. The ET2 and all air bearing arms like it are not suitable in any way, shape or fashion for high fidelity audio purposes. They put cartridges in such an unfavorable position as to increase distortion and phase errors. I understand the allure but it is based on the faulty premise that tracking angle error is more significant than other problems associated with tonearm design. It is in all actuality, minor. Trying to keep the cartridge tangent to the groove causes much more harm than good. Having said this there are two designs that need to be mentioned as they avoid the issues that plague most LT designs. These are the Schroder LT and the Reed 5T.
@pindac , there are many beautiful, cool looking turntables that are poor designs. The Onedof is one of them. Anybody can tack a motor to a plater and spin the affair accurately. Very few designers actually have a bearing on all the seemingly minor issues affecting the performance of a vinyl music reproduction device. It is obvious that you do not have an accurate handle on these issues. There is noise and vibration all around us, with amplitudes our senses can not detect. It is these vibrations that the phonograph cartridge was designed to detect, it is a vibration measuring device. If you are the least bit inquisitive you can see this for yourself if you have subwoofers and maybe even without them. Put your tonearm down on a stationary record and turn the volume up. That motion you see in the woofers is environmental rumble, noise you can't detect but the cartridge can. It does not matter how massive you make anything, that environmental rumble will travel through anything, even if it weights as much as K2. This whole mass thing is lay intuition at it's best. It is totally faulty thinking. A turntable has to be decoupled from the environment with all parts fixed together and moving in unison. Any design that ignores this principle is defective right out of the box. There are other issues that affect vinyl playback performance most notable is making the record perfectly flat and coupled to the platter so that any resonance is absorbed by the platter and not reflected back at the cartridge. Lathes use vacuum clamping for a reason. The eccentricity of records with wayward spindle holes is far more audible (pitch variation) than tracking angle error.
Fancy machining does not a good turntable make. I want my money spent on performance and sound engineering not bling or massive bling. If you have to have an impressive looking turntable at least get one that is soundly designed like the Basis Inspiration.